Who serves in the Illinois Senate?

Current members. Traceable sources.

This is a dated current-member snapshot. Membership follows the active term identified by the official chamber directory. A candidate list or vote lead does not establish a serving member. This view does not refresh automatically.

Serving members in the official 104th General Assembly tables were checked November 6, 2026. The House has 118 serving members (78 Democratic, 40 Republican); the Senate has 59 (40 Democratic, 19 Republican). All 177 district keys and affiliations match an independent Secretary of State Blue Book check. The dated Blue Book independently corroborates 174 current identities; three subsequent replacements have separate current official evidence.

The ILGA site returned HTTP 503 to direct downloads during this check. Retained rendered official table and card extracts supply the current roster; they are explicitly distinguished from original HTML. No unavailable individual profile body is represented as fetched. Records without a separately verified profile link point to the official chamber member table.

House 97 is Jessica Dixon Heitman, sworn in July 21, 2026, replacing Harry Benton. House 118 is Scott Doody, listed June 2026–present, replacing Paul Jacobs. Jacobs now serves Senate 59 after appointment following Dale Fowler’s departure; his official office announcement says he assumed the role immediately. Stale predecessor records and an old House profile under a Senate URL are excluded.

This page retains the 104th General Assembly serving roster. Article IV separately governs two-year House terms, staggered Senate terms, the second-Wednesday January session, organization and member qualifications. The next scheduled organization is January 13, 2027. Session convening alone is not presented as a separate legal term-start rule, and November 2026 winners are not substituted before verified service.

The September 2021 SB 927 / Public Act 102-0663 state legislative plans were upheld in the December 30, 2021 federal opinion. The June 2021 plan is excluded. Current official plan resources and University of Illinois geographic documentation continue to identify these legislative boundaries. Later litigation is tracked separately and does not itself establish replacement boundaries.

Representation maps only. No district demographics, ZIP/ZCTA findings or party vote shares are inferred from district boundaries.

Affiliations follow the checked 104th General Assembly active roster, with independent SOS evidence and separately documented replacements. No November winner is promoted early. This dated snapshot does not refresh automatically.

Small-scale display: Census 2024 state legislative cartographic polygons, checked against official enacted September 2021 SB 927 / PA 102-0663 House and Senate legal polygons. All display rings retained, with exact district IDs and legal interior/component checks. Not address-level district determination.

Official roster sources

• Illinois House official active member table ↗
• Illinois Senate official active member table ↗
• Illinois Secretary of State 2025–2026 Blue Book — independent district, affiliation and member biographies ↗
• Illinois Constitution Article IV — membership, sessions and qualification ↗
• House 97 — Dixon Heitman sworn in July 21, 2026 ↗
• Senate 59 — Jacobs assumes appointed role immediately, June 2026 ↗
• House 118 — current Doody profile, June 2026–present ↗

District boundary sources

• Illinois Senate Redistricting Committee — enacted SB 927 / PA 102-0663 files ↗
• Illinois House — approved September 2021 legislative plan ↗
• University of Illinois IECAM — current state legislative geography ↗

These maps describe representation. The 2024 ACS State Demographics authority remains statewide; no district, ZIP, or ZCTA demographic findings are inferred.

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